Level Mode is coupled in pitch and roll modes and is annunciated as both the vertical and lateral modes when active. Pressing the LVL Key engages the autopilot in Level vertical and lateral modes. Level Mode does not track altitude or heading. When the LVL Key is pressed all armed and active modes are canceled and the autopilot and flight director revert to LVL mode for pitch and roll. While in level mode, all other modes are available by pressing the corresponding button.